Shaving machine for cylindrical sound records



' May 19, 1931, B; E. JACOB 1,805,583

' SHAVINGMACHINE FOR'CYLINDRICAL SOUND RECORDS I Filed May 15. 1929 2 Sheets-Sheet 1 May 19, 193 1. Y B. E. JACOB 1,805,583

sruwme MACHINE FOR C'YLINDRICAL scum) RECORDS Fi led ma 15. 1929 2 Sheets-Sheet 2 Patented M ay'19, 1 93 l -i ammo E. moon, or anon; wrscousm SHAVING MAcHiNnroR 'oYLinnaronL sounpjnnoonnsf 2 Application filed Mayfi, 1929, f scrial@51363357.

The present invention is directed itoimprovements 1n shavingmachmes for cylindrical sound records.

The primary object of theinvent-ion is -to 5 provide a deviceof this character wherein the j shaving bladewill be automatically set to easily and quickly appliedto shaving; ma:

chines of well known construction,

With these and otherobjects in view, this invention resides in the novel features of con-Q elevatedandheld-against upward movement struction, formation, combination and\;ar-

rangement of parts to the hereinafter more fully described, claimed and illustrated in the accompanying drawings, in which Figure 1 is a plan view of a conventional form of shaving machine, showing the device applied thereto.

Figure 2 is a sectional view (in the line 2+2 of Figure 1.]

i Figure 3 is a sectional view onthe line 3 3 I of Figure 2; 1

Referring to the I the topof a conventional cabinet in which is contained the conventional form of driving mechanism, and upon this top is mounted the V usual screw feed shaft 2 which servesjto mover the carriage 3 longitudinally upon the guide rod 4. The carriage 3 carries the shaving blade 5 and the customary shavings dis charge chute 6. The mandrel 7 shows mounted thereon the usual sound cylinder 8:which=is engaged by the blade 5 during the shaving 1 operation.

The blade 5 is carried hy the holder 8 which is slidable in the sleeve '9 which, Iasusual, forms a part of the carriage 3. a The holder has its rear end protruding from the sleeve andicarries a depending plate 10 which is adapted to support-the feed screw ,11, the

50 s rin 10' servin as is "customer to [ur e a a i i 7 p p b drawings, 1 designates the holder rearwardly. In order to i I the screw-' 11., 'a wheel 12 is" fixed thereto in .lieu of the usual thumb wheel, it being obvious that when the wheel 12 is rotated the holder 8 willbe moved forwardly.) The wheel 12" is providedwith peripheral teeth 13-so out as 1 toprovicle" thirty notchesfle. V The front face of the wheel 12 1is provided with radial lines I 15,te'n of which'are employed, said lines being preferably colored red and numbered successivelyifrom l to 10. Thethre'e notches between any'pair oflin'es 15 vary 'in size. For

instance, the notches A are of greaterarea' than thenotches B, whilethenotches C are of lessfarea than thenotches B, the purpose of which will ,be 'later explained, I I

Abo'wedresilienttrip bar "15 is gprovided 7 I andhas one end'fixed to the top 1' of the cabinet, the free terminal 16 thereof being by the set -screw17; carried the bracket 18,"also mountedupon thetop 1; It will be obseryedauponreference to'Figure 3 that the carriageS moves to the right to its fullest extent the terminal-16' willengage in one of the notches to rotate the wheela sufiicient distance to} operate thefeed screw 11, whereupon the I bladeholder will be moved to can 3 'tendthe blade to act upon the cylinder-. I

5' The carriage3 carries the usual arm 19 to holdtheblade engaged with thecylinder and jserves to'elevate the carriage in order that terminal 1 6 of'the tripvbar is inlthe path of movement'of the wheel 12 so that when the the blade 5' maybe liftedafter each shaving operation. Obviously, the elevation of the a arm liftsithe half'feecl nut'20- from the feed screw 2 topermit movement of the carriage so that the "cylinders can be applied or removed from the mandrel A pointer 21 is mounted uponthe'carriage 3 and cooperates various shaving operations.

- Briefly, theoperation is as follows:

- with the numbers upon the wheel 12 in order n i The wheel l2sbeingcproperly set, the car riage8 moves from the right, or in the di rection of the arrow, and just before it reaches its extreme right position, the terininal 16 engages a notch C, thus turning th'ei wheel 12 10 i a greater depth. The carriage-is now returned a a distance of one notch so that the holder 8 will be shifted in order that the blade 5 will cut to a deeper depth. Thus, the operator need not manually adjust the blade as is now customary. Just before the carriage moves to extreme right position the terminal 16 has engaged a notch C and continued movement of the carriage causes the wheel 12 to be rotated the distance covered by the notch B, thus adjusting the blade to shave to a slightly to its left and position for the second shave ing operation and'when it has just about completed its fullest travel to the right,the ter-, minal 16 engages the notch A, rotating the wheel the distance of the notch G. Since the notches C include a smaller arc of the periphery of the wheel 12, than the notches B, the distance the wheel 12 is rotatedis less, and consequently the shaving cut will be of less depth;

The carriage is then again returned tothe left and'a third cut made. At this time the notch B rotates the wheel l2'the distance covered by notch A, the largest of the three,

preparatory to making the first cut on the c linder next to be shaved. The depth of t e cut made by the blade varies and since each cylinder is shaved three times, the first- A out should be the deepest, the second less,

and the third still less. The wheel 12may have a knob 22 fixed thereto operable to adjust the wheel previous to the first cutting or shaving operation.

What is claimed is I V A machine for shaving cylindricalsound records comprising a cylinder receiving mandrel, a screw feed shaft geared to the man drel, a carriage detachably connected with the screw feed shaft, a blade holder on the carr1age,a screw, connecting means between the screw and blade holder, a knob on the screw for manual adjustment thereof, a Wheelfixed to the screw and provided with groups of teeth of ditferent size and having a scale to facilitate selection of the desired group ofteeth, a trip inthe path of the toothed Wheel, and means for adjusting the trip tovary the period of action on the selected group ot teeth.

In testimony whereof I affix my signature.

BRUNO E. JACOB. ts] 

